Convert a number of places in core and plugins to use the BIT_N() macro instead of 1<<n. Speeds up things on SH1, and also reduces core binsize. Most notable speedups: 1 bit lcd driver: drawpixel +20%, drawline + 27%, hline +5%; jpeg viewer: +8% for 1/8 scaling. Other targets are unaffected.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21205 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 3 insertions, 3 deletions

diff --git a/apps/plugins/alpine_cdc.c b/apps/plugins/alpine_cdc.c
index a7aeec306f..494fa17842 100644
--- a/apps/plugins/alpine_cdc.c
+++ b/apps/plugins/alpine_cdc.c
@@ -669,16 +669,16 @@ void dump_packet(char* dest, int dst_size, char* src, int n)
 
 bool bit_test(unsigned char* buf, unsigned bit)
 {
-    return (buf[bit/4] & (0x01 << bit%4)) != 0;
+    return (buf[bit>>2] & BIT_N(bit&3)) != 0;
 }
 
 
 void bit_set(unsigned char* buf, unsigned bit, bool val)
 {
     if (val)
-        buf[bit/4] |= (0x01 << bit%4);
+        buf[bit>>2] |= BIT_N(bit&3);
     else
-        buf[bit/4] &= ~(0x01 << bit%4);
+        buf[bit>>2] &= ~BIT_N(bit&3);
 }